Separable steel square.



J. A. WRAY.

SEPARABLE STEEL SQUARE.

APPLICATION FILED MAY H. 1914.

Patented May 25, 1915.

6 M 6L KM 'LTAMES A. WRAY, or

LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO WALTER H. HAZLETT, OF LOS ANGELES, CALIFORNIA.

SEPARABLE STEEL SQUARE.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed. May 11, 1914. Serial No. 837,782.

To all whom it may concern:

Be it known that I, JAMES A. WRAY, a citizen of the United States, residing at Los Angeles, county of Los Angeles, State of California, have invented a new and useful Separable Steel Square, of which the following is a specification.

My object is to make a separable steel square with the line of separation some distance from the corner on the long leg, so that when separated the short leg and the integral piece of the long leg may be used as a small square; and to improve the details of the joint; and my invention consists of the novel features herein shown, described and claimed.

Figure 1 is a plan, upon a reduced scale, of a separable steel square embodying the principles of my invention. Fig. 2 is a fragmentary plan, upon an enlarged scale, of the corner and joint as seen looking in the direction' indicated by the arrows 2 in Figs. 3 and 4. Fig. 3 is a sectional detail on the line 3-3 of Fig. 2. Fig. 4 is a view analagous to Fig. 3 and showing the operation of separating or connecting the two pieces. Fig. 5 is a fragmentary bottom plan view, showing the opposite side from Fig. 2, as indicated by the arrow 5 in Fig. 4. Fig. 6 is an end view of the removable piece, as indicated by the arrows 6 in Figs. 4 and 7 Fig. 7 is a fragmentary plan of the part shown in Fig. 6 as indicated by the arrow 7.

In Fig. 1 I have shown a complete square, comprising the first leg 1 and the second leg 2. The line of separation 3 is some distance from the corner on the second leg, so that when the removable section 4 is separated from the main section the main section may be used as a smaller square or try square.

An opening 5 extends through the integral portion 6 of the leg 2. A cross-bar 7 forms one end of the opening 5, said cross-bar being flush with the upper surface of the portion 6 and only about one-third as thick as the body of the square. A second and smaller opening 8 extends through the portion 6 upon the opposite side of the cross-bar 7' from the opening 5 leaving a cross-bar 9 flush with the lower surface of the body of the square and extending upwardly about one-third of the thickness. The cross-bar 9 is flush with the end face of the portion 6. The body of the removable section 4 is the same width and thickness as the integral portion 6 so that when joined together end to end the surfaces are smooth and continuous. A tongue 10 extends from the inner end face of the section 4 and is adapted to pass through the second opening 8 over the cross-bar 9 under the cross-bar 7 and fit in the first opening 5, there being a recess 11 in its lower face to fit the cross-bar 9 and a similar recess 12 in its upper face to fit the cross-bar 7. The sides of the tongue 10 are cut away between the ends to form a clearance so that it will fit tight at its extreme ends and loose between the ends. Extending from the inner end face of the tongue 10 are segmental recesses 13 and 14, the web 15 between the recesses being wedge-shaped in elevation, as shown in Fig. 6. A thin disk 16 is recessed into the upper face of the body of the square and a similar thin disk 17 is recessed into the opposite side of the body. A stud 18 extends from the disk 16 through the web 19 between the disks 16 and 17 and a reduced rivet portion 20 extends from the stud 18 through the disk 17 and is riveted to hold the two disks together and loose enough to rotate. The disk 17 is cut away to form the straight side 21, said straight side 21 being inline with the end face of the tongue 10, so that when the parts are put together as in Fig. 4, the end face of the tongue 10 will pass the edge 21 and then if the button is rotated, the web 15 will come between the disks 16 and 17, as shown in Fig. 3, the tapered feature of the web 15 serving to make it easy to turn the button, and the button may be turned as tight as desired, thereby centering the web 15 and holding the parts firmly together, flush and true. screw-driver slot 22 is milled into the outer, upper face of the disk 16, so that if required a screw-driver may be employed.

It is obvious that the parting line 3 may be any desired distance from the corner of the square or on either leg and that the length of the tongue 10 may be varied and the location of the button correspondingly varied.

The details of construction may be varied in many ways without departing from the spirit of my invention as set up in the foltending from the first leg; a second leg removable portion fitting against the end of the integral portion, there being an opening through the integral portion, a crossbar flush with the upper face of the integral portion, a cross-bar flush with the lower face of the integral portion, forming a second opening between the cross-bars; there being a tongue extending through the second opening from the removable portion of the second leg over one cross-bar and under the other cross-bar into the first opening; and a button carried by the second integral portion for engaging said tongue and locking it in said first opening.

2. A separable steel square comprising a first leg; a second leg integral portion extending from the first leg; a second leg removable portion fitting against the end of the integral portion, there being an opening through the integral portion; a cross bar flush with the upper face of the integral portion; a cross bar flush with the lower face of the integral portion, forming a second opening between the cross bars; a tongue extending through the second opening from the removable portion of the second leg under one cross bar and over the other cross bar into the first opening, there being a recess in the upper face of the tongue to fit the first cross bar and a recess in the lower face of the tongue to fit the second cross bar; and a button carried by the second leg integral portion for engaging Copies 01 this patent may be obtained for five cents each, by addressing the said tongue and looking it in the first opening;

through the'integral portion; a cross bar flush with the upper face of the integral portion; across bar fiush with the lower face of the integral portion, forming a second opening between the cross bars; a

tongue extending through the second open ing from the removable portion of the second leg under one cross bar and overthe other cross bar into the first opening, there being segmental recesses extending from the end edge of the tongue on its upper and lower sides, the web between the recesses being wedged-shaped in elevation; a disk recessed into the upper face of the bodyof the square; a second disk recessed into the lower face of the body .of the square; and a stud extending through the body of the square and connecting the disks, the second disk being cut away to form astraight side so as to allow the end face of the tongue to pass and so that when the button thus constructed is rotated, the tongue will be locked in the second opening. JAMES A. WVRAY, Witnesses:

FRANK M. MANTHEI, SEMER G. WELLS.

Commissioner of Patents,

Washington, D. G. 

